
import  pytest 

import  os

class Calc:
    def  add(self,a,b):
        return a + b


class Test_Calc:

    def  test_add1(self):
        a = 6
        b = 5
        c = 11
        
        calc = Calc()
        s = calc.add(a,b)
        
        assert  s == c
        